> Sure, but the interfaces are more or less as described, and that's what MS has to deal with. I mean, yeah, you could make it into even more of a messy description, but from the start menu's perspective the PMIC or EC interface to power management isn't particularly important.

Now days, the majority use case is "shut the lid". If software works (hah!), then users shouldn't ever have to manually shutdown or reboot, or worry about power state at all.

Perfect world and all that.